PSY 310 Lecture Notes - Lecture 10: Maximum Fun, Standard Deviation, Bar Chart
6 Mar 2019
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Document Summary
A researcher compares freshmen, sophomores, juniors, and seniors with respect to how much fun they have while attending college (1 = no fun at all, 7 = maximum fun) Mode - score that occurs most often. How you ask the question influences the answer and the quality of your answer. For example, intervals of tables can influence results greatly. Up to hour as first category vs. up to 2 hours as first category. Histogram - quantitative variables arranged in order. Bar graph - qualitative variables (cannot be arranged in order) Range - difference between largest and smallest scores. Variance - the total amount of variability (the standard deviation squared) Standard deviation - square root of variance; tells us important things about a normal distribution. Consider a normal distribution with a mean of 65 and a standard deviation of 7. Thirteen percent of all the scores in this distribution occur between the scores of:
